Real author: Andy Ismail
Semaphore signal indicator based on the price action strategy looking for the strongest intraday trend, which can notify about trend change by generating an alert, sending an email or a push notification to a mobile device.
//+----------------------------------------------+ //| Indicator input parameters                  | //+----------------------------------------------+ input int iPeriod=3; input uint NumberofBar=1;   //Bar number to generate a signal input bool SoundON=true;    //Enable alert input uint NumberofAlerts=2; //Number of alerts input bool EMailON=false;   //Enable notification about signal by an email input bool PushON=false;    //Enable notification about signal by push
This indicator was first implemented in MQL4 and was published in CodeBase on 04.01.2016.
Fig1. The Alpha Trend Spotter Price_Action indicator